O Scale is one of the most common model train scales in production today and is widely associated with Christmas. Made with a scale proportion of 1:48, most O Scale trains run on 3-rail track and use AC current for power. Lionel is the most famous of the O Scale train producers, but other current manufacturers include MTH, Atlas, Weaver, Williams by Bachmann, 3rd Rail, and RMT. Other well-known O Scale train producers in the past include K-Line (purchased by Lionel in 2007), Marx, Right-of-Way, and Ives. O Scale trains have been around since the early 20th century and as a result there is a seemingly endless variety of O Scale trains available today. Trainz specializes in O Scale. We carry a full line of O Scale sets, engines, cars, track, and accessories from all manufacturers. Trainz actively searches for O Scale collections and frequently stocks out-of-production items.